WIP: Adding snapshot with V0 to data-regression

I think i need to add another factset to the repo before attempting another snapshot with the latest version, so that we can have a snapshot that is built incrementally from one with the old metadata and generates a new snapshot with the new metadata
Not that it matters, but I usually just try to use `beOkValue` to save the extra noise, which means you might need to yield slightly different things. Up to you though, this is fine.